Scissors or shears.



G. H. ISBELL. SGISSORS 0R SHEARS.

APPLICATION FILED AUG. 20, 1909.

946,918. Patented Jan. 18,1910.

GEORGE H. ISBELL, OF I-IOTCI-IKISSVILLE, CONNECTICUT.

SCISSOBS OR SHEARS.

Specification of Letters Patent.

Patented J an. 18, 1910.

Application filed August 20, 1909. Serial No. 513,839.

To all whom it may concern:

Be it known that I, GEORGE E. IsBELL, a citizen of the United States,residing at I-Iotchkissville, in the county of Litchfield and State ofConnecticut, have invented a new and useful Improvement in Scissors orShears; and I do hereby declare the following, when taken in connectionwith the accompanying drawings and the letters of reference markedthereon, to be a full, clear, and exact description of the same, andwhich said drawings constitute part of this specification, andrepresent, in

Figure 1 a plan view of a pair of scissors or shears embodying myinvention. Fig. 2 a sectional view on the line a?; of Fig. 1. Fig. 3 asimilar sectional View illustrating a modified form of my invention.

This invention relates to an improvement in scissors and shears.

In the use of scissors and shears, and particularly shears, it isdesired that some spring device be arranged adjacent to the pivot tothrow the edges of the blades together so as to keep the scissors orshears in condition for cutting. Various devices for this purpose havebeen employed some of which are more or less cumbersome.

The object of this invention is a simple arrangement of spring devicewhich will maintain its tension and which cannot be effected from theoutside as is the case when a screw tension device is employed; and theinvention consists in the construction hereinafter described andparticularly recited in the claims.

The blades 2, 3, are of usual construction provided with the usual grips4:, 5, and secured together by a pivot 6. In one of the blades as 2adjacent to the pivot, I form a circular opening 7 and the inner end 8of this opening is enlarged to form a shoulder 9. Into this opening Ipass a cupshaped shell 10 slightly deeper than the thickness of theblade so as to project slightly beyond the outer face of the blade, andthis shell is formed with a flange 11 which seats on the shoulder 9, themouth of the shell being flush with the inner face of the blade. Intothis cup-shaped shell 10 I place a coiled spring 12 formed from a highgrade of wire and into the spring I place a plug 13 having a flange 14which corresponds in diameter to the internal diameter of the cup andwhich rests upon the spring. The face of this plug is preferablyrecessed to receive an anti-friction ball 15 which is forced by thespring against the inner face of the blade 8 and so as to separate theblades at a point below the rivet, and consequently throw the edges ofthe blades together.

Instead of employing an anti-friction ball 15, it is apparent, and asshown in Fig. 3 of the drawings, that the face of the plug 13 may bearagainst the blade 8, accomplishing, to a certain extent, the same resultas the anti-friction ball.

It will be seen that the spring is entirely inclosed; it maintains aconstant tension, and cannot be effected from any outside source; andthe end of the cup will not interfere with the ordinary use of shears,that is, it is not liable to catch when the shears are 111 use.

I claim 1. A pair of scissors or shears comprising two blades pivotedtogether, one of said blades formed with an opening at a point below thepivot, a cup-shaped shell formed from a single piece of metal closed atits outer end and rigidly located in said opening, a plug located insaid shell and formed with a flange, and a wire spring in said shell andbearing against the closed end of the shell and against said flange.

2. A pair of scissors or shears comprising two blades connectedtogether, one of said blades formed with an opening at a point below thepivot, a cup-shaped shell located in said opening, a wire spring bearingagainst the bottom of said shell, a plug resting on said spring, theface of said plug recessed, and a ball located in said recess.

8. A pair of scissors or shears comprising two blades connectedtogether, one of said blades formed with an opening at a point below thesaid pivot, the inner end of said opening enlarged, a cup-shaped shellentered into said opening and formed with a flange at its inner end, aspiral spring entered into said cup against the bottom of which itrests, a plug Within said spring and formed with a flanged bearing uponthe said spring, a recess in the inner face of said plug, and a balllocated in said recess and adapted to bear against the inner face of theadjacent blade.

In testimony whereof, I have signed this specification in the presenceof two subscribing Witnesses.

GEORGE H. ISBELL.

Ht-nesses WILLARD A. IsBnLL, GEORGE F. MORRIS.

